Loose-leaf binder.



W. E. & H. J. GAYLORD.

LOOSE LEAF BINDER.

APPLICATION FILED NOV. 13. 1911.

1,067,019. Patented July 8,1913.

and its outer end is provided with an upturned flange or lug l4E- havinga threaded aperture 15- for engagement with the adjacent threaded portion 5 of the spin dle lso that when these plates are assembled in the manner shown more clearly in Figs. 3 and t and the screw rotated by means of a key or other operating member as l6 shown by dotted lines in Fig. 1, the tapering plates 8 will be moved simultaneously lengthwise in opposite directions to impart transverse movement to the jaws 2 of each pair. In order that this action may be more clearly understood it may be stated that each jaw of each pair at one side of the operating plate -3- is engaged with the adjacent edge of said plate so thatby moving the plates inwardly or in the direction of their taper, the jaws of each pair will be forced toward each other, while the opposite or outward movement of the operating plates will permit the jaws to spread apart, this latter operation being effected through the medium of separate springs 17 one for each pair of jaws as best seen in Figs. 3, 4: and 5.

The edges of the flanges 8- having the grooves -9 are drawn or contracted inwardly toward each other and serve to retain the springs -17, in operative posit-ion and also serve as guides for the wedge-shape jaw-operating members 3.

The spindle -t is held against endwise movement by means of a bracket 18 which is secured to the bottom of the base portion 6- and is provided with an opensided slot 19 for receiving a reduced portion 20 of the spindle, thereby permitting said spindle to turn freely and at the same time permitting it to be removed when disengaged from the lugs 14L of the operating members 3 after the cap or back -7- is removed.

The combined width of the overlapping arms l2- of each pair of jaws is substantially equal to the length of the openings 11 through which they project so that the end walls of the opening form guides to hold the jaws against lengthwise movement relatively to the casing, said openings being staggered longitudinally a distance corresponding to the width of one of the arms 12.

The gripping portions of the jaws -2 which are exterior to the case extend longitudinally beyond the outermost arms 12 and are therefore longer than the openings -11 to form shoulders 29- for engaging the outer face of the base portion of the casing, while the laterally offset arms engage the inner face of the same portion of the base, thereby holding the jaws against undue inward or outward movement or displacement and permitting them to slide transversely.

The pamphlets, leaves or other articles as -a to be clamped are arranged with their backs in alinement and resting against the base l1- between the jaws 2, said jaws being then drawn together by means of the screw portions 5 of the spindle & and tapering operating members 3-.

That is, by applying the key 16 to the angular end of the spindle -4 and rotating said spindle in one direction, the tapering members 5- will be drawn toward each other so that their tapering ends advance into the grooves 13* between the closed ends of the arms l2- until the jaws -2 are firmly clamped and held against the interposed portions of the pamphlet or leaves Cb, the reverse rotation of the spindle serving to withdraw the wedgeshape operating members from the arms 12, thereby permitting the springs to force the jaws apart to release such articles.

In Figs. 9 and 10, we have shown positive means for moving the jaws in opposite directions, thereby eliminating the use of springs, said means consisting of a plate 30 having inwardly converging slots or ways -31 for receiving projections 32- on the jaws as -25 said plates 30 being provided at their outer ends with lugs -33 having threaded apertures for receiving screw portions 5 of the spindle 4:-. Otherwise the structure of the jaws is substantially like that shown in Fig. 7 except that they are not provided with the laterally projecting arms 12 and the length of the openings through which the lugs 32- pass are substantially equal to the length of the lugs.

What we claim is:

1. A loose leaf or pamphlet binder comprising a tubular supporting base having openings in its front side, jaws movable transversely of and upon the base and projecting through said openings, an operating member movable lengthwise of the base and having tapering bearings in sliding contact with the jaws, and means for moving said operating member.

2. In a loose leaf or pamphlet binder, a supporting base having a front plate and a back plate, the front plate being provided with openings, a jaw operating member movable lengthwise of the base, and cooperative contacts between said member and jaws in sliding engagement with each other, one set of contacts being convergent in the direction of movement of said operating member, and means for moving said operating member endwise.

3. In a loose leaf or pamphlet binder, a tubular supporting base having openings in its front side, opposite jaws movable in said openings transversely of the base, an oper ating member for said jaws having conver: gent bearings in sliding contact with the jaws, and means for moving the operating member in the direction of convergence of said bearings.

l. In a loose leaf or pamphlet binder, a supporting base, separate pairs of jaws mov able transversely of and upon the base, separate operating members for said jaws having wedging bearings in contact with the jaws, and means for moving said members longitudinally of the base.

5. In a loose leaf or pamphlet binder, a tubular supporting base having openings in its front side, a pair of jaws slidable transversely of and upon the base and projecting through said openings, a tapering operating member in sliding contact with the jaws, and movable lengthwise of the base, and means for operating said member.

(3. In a loose leaf or pamphlet binder, a base having separate pairs of openings therethrough, separate pairs of jaws movable in said openings transversely of the base, separate wedge-shape operating members each in sliding contact with the jaws of each pair and provided with threaded apertures of opposite pitch, a rotary spindle having threads of opposite pitch engaged in said apertures, and means for holding the spindle against endwise movement.

In witness whereof we have hereunto set our hands this 7th day o'l November 1911.

\VILIJIS 1*. UAYLORD. HENRY J (irAYLOlil). \Vit nesses:

H. l). Cnasn, F. F. Srmiuxe.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G. 

